So I rinsed it really well and filled it up with water from my main tank from a water change just to let some salt water sit in there for a bit. Do I need to rinse it w vinegar or the dreaded bleach or am I fine to just rinse it one more time and add some established water?

I've always done a 10% bleach solution with filter (no media) for water flow. Run for 8 hours (good wipe down of all glass) then drain. Two 24 hour cycles of clean water ( run 24 hours, drain, refill and run again) then air dry for a week.